Air treatment device



FIG. 1 is a perspective view of an air treatment device showing my new design, in open condition;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof from the left of FIG. 2;

FIG. 5 is a side elevational view thereof from the right of FIG. 2;

FIG 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIGS. 8 and 9 are views similar to FIGS. 2 and 3, respectively, but with the device in closed position. 

The ornamental design for an air treatment device, as shown, and described. 